Wearable fitness bands sales skyrocketed 684 per cent in the first six months of 2014, according to research firm Canalys, with more than six million wearable fitness bands sold worldwide.

But health-driven devices are not only getting more popular but more unusual.

Below are five unexpected health gadgets available now or later this year.

More than just an earphone ... the Jabra Sport Pulse Wireless Earbuds measure the wearer's heart rate.Source:Supplied

1. Jabra Sport Pulse Wireless

These sporty, wireless earbuds, unveiled yesterday, look like a typical health device. The earpieces, however, hide a second-generation heart-rate sensor that monitors the wearer’s pulse and feeds data to an accompanying app. Jabra product management director Morten Urup says wearers will be encouraged to complete a series of heart-rate tests before exercising with the device to ensure workouts are tailored and calorie estimates more accurate. “It adjusts the calorie burn to your heart rate so it’s no longer just an average of 2000 people like you,” he says. The earbuds also deliver music wirelessly for up to 4.5 hours per charge, feature NFC for quick connections, and will guide wearers through their workouts. The earbuds are due in Australian stores on October 1 for $249.

Jabra Sport Pulse Wireless

Why walk when you can motor along . the Acton Rocketskates.Source:Supplied

2. Acton Rocketskates

We don’t have hoverboards yet but motorised rollerskates are coming soon. Acton has called its version Rocketskates, and they comprise two skates with four built-in motors. The skates fit around the heel of your existing shoes, leaving the front of your foot free for walking and pushing off. After switching them on, and choosing a leading foot, users push off to start and accelerate by leaning forward on the leading foot. The skates also connect to a smartphone app to track your route, or drive them remotely. Three models of Rocketskates are available for pre-order, with the top model reaching speeds of up to 16km/h and costing US$679.

Acton Rocketskates

Changing times . the ReSound Linx hearing aid for the Apple iPhone.Source:YouTube

3. ReSound Linx hearing aid for Apple iPhone

Did you know hearing aids can be connected directly to an Apple iPhone, iPad or iPod Touch? The GN ReSound Linx, released this year, is a Made for iPhone device that can be connected to an iOS gadget using Bluetooth. Once connected, it can stream phone calls, music and video soundtracks directly to the hearing aid. It can also be used as a remote control for the aid, changing its volume levels, plus bass and treble settings. A Find My Hearing Aid feature also features. Out now.

Apple iPhone-compatible hearing aid

The world’s most advanced sleep mask captured attention when it promised to induce “lucid dreams” for wearers, but it could deliver a lot more too. The NeuroOn sleep mask will be packed with sensors to measure brain waves, muscle tension, eye movement, heart rate, blood oxygenation, temperature and movement to deliver a complete picture of the wearer’s sleep. It will also feature lights and promises to wake wearers gently with illumination like a dawn, or get them used to a new time zone to beat jet lag. It’s an unusual idea but one that has plenty of fans. Not only did the device exceed its Kickstarter funding goal, but it recently sold out its second batch of pre-orders at a price of $US299.

Smart dreams sleep mask

Turn your bike into a moped ... the FlyKly Smart Wheel has a motor inside.Source:Supplied

5. FlyKly Smart Wheel

You could buy a moped, or you could turn your existing bicycle into a moped with this “pedal assist wheel” funded through Kickstarter late last year. While still only available for pre-order, if you can spare $US800, the FlyKly Smart Wheel will contain a battery, motor and charging port. Its New York founders promise users will be able to attach the 3kg Smart Wheel to any bicycle and it will deliver a boost of up to 25km/h for up to 40km per charge. It will also connect to an app, allowing you to set its top speed on your smartphone.

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